use SIREPO_MPI_CORES for compilation in parallel
use SIREPO_MPI_CORES for compilation in parallel

mkeilman/sirepo,radiasoft/sirepo,radiasoft/sirepo,radiasoft/sirepo,mkeilman/sirepo,radiasoft/sirepo,mkeilman/sirepo,radiasoft/sirepo,mkeilman/sirepo